MC68HC912B32CFU8 Freescale Semiconductor, MC68HC912B32CFU8 Datasheet - Page 24

• Manufacturer Part Number: MC68HC912B32CFU8
• Description: IC MCU 32K FLASH 8MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC68HC912B32CFU8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 768 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

General Description
1.5 Ordering Information
The M68HC12B-series devices are available in 80-pin quad flat pack (QFP) packaging and are shipped
in 2-piece sample packs, 84-piece trays, or 420-piece bricks.
Operating temperature range, package type, and voltage requirements are specified when ordering the
specific device.
Documents to assist in product selection are available from the Freescale Literature Distribution Center
or your local Freescale sales offices.
Product selection guides can also be found on the worldwide web at this URL:
Evaluation boards, assemblers, compilers, and debuggers are available from Freescale and from
third-party suppliers. An up-to-date list of products that support the M68HC12 Family of microcontrollers
can be found on the worldwide web at this URL:
1.6 Pinout and Signal Descriptions
1.6.1 Pin Assignments
The MCU is available in an 80-pin quad flat pack (QFP).
assignments. Most pins perform two or more functions, as described in the
1.6.2 Power Supply Pins
The MCU power and ground pins are described here and summarized in
1.6.2.1 V
V
short-duration current demands on the power supply, use bypass capacitors with high-frequency
characteristics and place them as close to the MCU as possible. Bypass requirements depend on how
heavily the MCU pins are loaded.
1.6.2.2 V
V
short-duration current demands on the power supply, use bypass capacitors with high-frequency
characteristics and place them as close to the MCU as possible. Bypass requirements depend on how
heavily the MCU pins are loaded.
1.6.2.3 V
V
allows the supply voltage to be bypassed independently.
1.6.2.4 V
V
24
DD
DDX
DDA
RH
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and V
and V
and V
and V
DD
DDX
DDA
RH
SS
RL
SSX
SSA
and V
and V
are the reference voltage pins for the ATD.
are the internal power supply and ground pins. Because fast signal transitions place high,
and V
and V
are the external power supply and ground pins. Because fast signal transitions place high,
are the power supply and ground pins for the analog-to-digital converter (ATD). This
SS
RL
SSX
SSA
M68HC12B Family Data Sheet, Rev. 9.1
Figure 1-3
and
Figure 1-4
Table
1.6.3 Signal
1-2.
Freescale Semiconductor
show the pin
Descriptions.